Fuel Burn per Km

Hi all,

Hope somebody can help (and that I am posting in the right place).

Basically I am doing some research at university into increase in fuel burn per kg additional weight carried per flight. I have some catch-all figures that I have found on line but nothing that shows how such figures have come about.

I have found little so far to help me with this in the way of forumla but as I understand it fuel use will be some sort of combination aircraft type, distance, pax (and pax weight), Cargo, empty mass, fuel carried, fuel not burned. I am not sure however of how these figures can be put together to show how fuel use will reduce with an increase in weight though!

I am also wondering where I can get the data I need. I understand that I will have to use a number of assumptions (actual pax / pax weight / cargo), and I’m sure I can dig out that sort of stuff from somewhere, however not sure where I can get info on flight distance / aircraft type, or not without going through each departure one by one anyway!

Any help or advice gratefully appreciated. If I have been too vague in areas or confusing please let me know but be nice 🙂

Thanks,
Marty

Additional;
– For the study I am looking at all flights leaving Manchester and Heathrow on a given day.